微粒助留助滤体系用于废纸制浆造纸的研究

轻化工程论文编号:QH033  论文字数:14039,页数:35

目  录
中文摘要 I
英文摘要 II
目录 III
1 绪论 1
1.1 前言 1
1.2 助留助滤技术发展概况 1
1.3 助留助滤机理 3
1.4 微粒助留助滤体系研究的现状及本论文研究的意义 8
2 实验 11
2.1  实验原料 11
2.2  主要设备及仪器 11
2.3   实验方法 11
3 结果与讨论 15
3.1  CPAM及膨润土用量对CPAM/膨润土体系助留助滤效果影响 15
3.2 pH值对CPAM/膨润土体系助留助滤效果的影响 17
3.3 硫酸铝用量对CPAM/膨润土体系助留助滤效果的影响 19
3.4 剪切速率对CPAM/膨润土体系助留助滤效果影响 20
3.5 纸料的Zeta电位分析 21
3.6 CPAM体系与CPAM/膨润土体系对手抄片物理性能影响 23
4 结论 27
致  谢 28
参考文献 29

摘 要：本论文就单元助留助滤体系、双元微粒助留助滤体系用于废纸制浆造纸的助留助滤效果进行初步探讨。实验结果表明，在保持纤维负电性前提下，CPAM单元助留助滤体系、CPAM/膨润土助留助滤体系都可以有效的改善浆料的助留助滤效果；随着助留助滤体系加入量的逐渐增加，浆料的助留助滤效果逐步增强；CPAM/膨润土助留助滤体系的助留助滤效果明显高于CPAM单元助留助滤体系；而且对于浆料的pH在近中性和中性条件下，会有良好的助留助滤效果。CPAM/膨润土体系的最佳用量CPAM0.1%、膨润土0.2-0.3%。与未加助剂比，助剂应用达到最佳效果情况下，所抄送纸页的表面强度略有改善，定量、厚度有所提高，但纸页的裂断长、环压强度均有不同程度的下降。

关键词：CPAM；CPAM/膨润土；助留助滤；裂断长；环压强度
Study of microparticle retention and drainage aid system on Pulp and Paper
 
Abstract: This article introduces the study of microparticle retention and drainage aid system on Pulp and Paper. The experimental results show that Maintain the fiber under the premise of Negative , CPAM unit Retention System and CPAM / bentonite Retention system both can improve the slurry Retention effect，And with the addition of, Retention slurry to enhance the effect of, However, CPAM / bentonite Retention was significantly higher than the effect of the system unit CPAM Retention System. And for the slurry in the near-neutral pH and neutral conditions, Have a good effect of Retention .CPAM / bentonite system, the best dosage CPAM0.1%, Bentonite 0.2-0.3%. And not more than additive, additive effect of the application of the best cases, the surface of copy paper a slight improvement in strength, quantitative, increased thickness, but the paper breaking length of the ring have different compressive strength the extent of the decline in.
Keywords：CPAM; CPAM / bentonite; Retention;Breaking length; Central pressure level